US1262664A - Pump. - Google Patents

Description

H- K. HEDGES.

PUMP.

. APPLICATION FILED MAY 2. I9'I4.

Patented Apr. 16, 1918.

WITES SEIS IS ATTRNEY 'HA-REY K. HEDGES, 0F LOS AN'GrIElLIES7 CALIFORNIA.

PUMP.

Specicaton of Letters' Patent.

Patented Apr-.16,1918.

Application filed May 2, 1914. Serial No. 835,919.

To all whom tf/nay concern:

Be it known that I, 'HARRY K. IHEDGES, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to pumps, and more particularly to that class of pumps designated as displacement pumps, in whichcompressed air is utilized 'for raising liquids, by the application of the compressed air directly `on the surface of successive charges of the liquid, such charges being thereby driven out of suitable displacement chambers.

The invention has for its object to provide a pump of the lgeneral character stated, which. will be relatively simple and inexpensive in construction, positive, highly eiiicientand economical in operation, and whereby those losses which accompany, in present practice, the utilization of 'compressed air or other suitable elastic medium in the direct applicationthereof to the liquid to be raised, are eliminated. This object is attained by such provision, combination or interrelation of elements and features, that the elastic medium employed'for raising the liquid, or a portion of such medium, is employed to control the operation of the pump by operating` a suitable controlling member or members for controlling the admission and exhaust ofthe elastic medium to the displacement chambers, the controlling member or members being positioned adjacent thereto, such member or members in turn being subject to the control of a distributing timer which may be placed eX- terorly of the well, mine, shaft, or the like in which such pump is installed. The controlling member or memberslbeingplaced at or near the point of work and being controlled through the elastic medium itself, the pump is especially well adapted for use in deep wells where the great distance between the displacement chambers and the means of controlling the operation thereof .would necessitate, in lpumps organized in accordance with standard practice, the use of long and heavy connecting means, or would result, in cases where the medium itself is controlled at such distances 'from the point of work, Without the intermediation of the controlling member or members, in

great loss of energy due to the wasting ofthe drawing and finally pointed out in claims.

In the drawing:

Figure 1 v'is a fragmentary vertical transverse sectional View of a portion of a deep well, such as a deep oil well, showing the improved pump installed therein;

Fig. 2 is a view similar to Fig. l, showing the reverse side of the pump, the Vdisplacement chambers being shown in section;

Fig. 3 is a vertical transverse vsectional view of one of' the controlling members, taken on the line m3-3, Fig. l, *and looking in the direction of the appended arrows;

Fig. 4 is a view similar to Fig. 3, being a vertical transverse sectional view of the other controlling member, taken on the line m4-4, Fig. Vl, and looking in the direction of the appendedarrows;

Fig. 5 is a horizontal transverse sectional view takenvon the line @-005 Fig. 2, and

looking in the direction of the appended arrows; Y

Fig. 5 is a view similar to Fig. 5 taken o-n the 'line :v6-006, Fig. 2, and looking in the direction of the appended arrows; and

Fig. 7 is a view similar to Figs. 5 and 6, taken on the line 027-007, Fig. 2, and looking in the direction of the appended arrows.

vCorresponding parts in all the ligures are designated by the same reference characters.

Referring with particularity to the drawing, A designates Igenerally the hole of a deep well within whichy liquid to be pumped is shown as at a. `The improved pump is shownas comprising in the main a plurality of displacement chambers B and C and controlling members D and E for the respective chambers B and C. These controlling members being subject to controlby a master controller or distributing timer F shown at, the orifice of the well, snchc0ntrol by the master controller F over the controlling members B andl E being had through the medium lof the elastic working fluid. The displacement chambers B and' C are preferably formed in a cylindrical shell 8, the chamber B being provided with a discharge duct 9 and an inlet check valve 10, a discharge check valve 11 being provided in an enlargement 9'DL at the upper end of the duct 9, such valve co-acting with a suitable seat 12 in the end wall 9b of the duct 9. A seat 13 for the inlet valve 10 is formed in the bottom wall 14 of the chamber B. The chamber C is likewise provided with an inlet checkvalve l5, a discharge check valve 16, located in an enlargement 17at provided in a discharge duct 17, the discharge check valve 16 being provided with a seat 18 in the end wall 17h of the duct 17, a seat for thc inlet valve 15 being provided in the bottom wall 19 of the chamber C.

In the embodiment of the invention shown in the drawing, the construction of the displacement chambers, which will be readily understood by reference to Figs. 1, 2, 3 and il, is particularly well adapted for use in deep wells of small diameter, compartments being formed, one on each side of a vertiV cal transverse central partition 2O dividing the cylindrical shell 8 into the chambers B and C, the discharge ducts 9 and 17 being formed by semi-circular walls 21 and 22 respectively, such walls 21 andf22 being made integral with the partition 20, one'on each side thereof, and each extending to within a short distance of the bottom of its respective chamber B or VC, the partition 20'extending the full length of the chambers B and C merging into the top wall 8a and the bottom wall 8b thereof. A discharge valve chamber 23 is provided at the top of the cylindrical shell 8, to provide space for the play of the valves, a discharge pipe 24 for the liquid being threaded as at 24a into the top wall 25 of the valve chamber 23. Y Y

The controlling members D and E each comprise a cylinder 26 and a piston valve 27 mounted therein and adapted to be reciprocated through the medium of the working fluid, the interval between reciprocations of the pistons 27 being determined by the speed at which the timer F is driven, as will hereinafter be described. The cylinders 26 each are provided with an inlet port 28 and a discharge port 29, other ports 30 and 31 being provided vin the cylinder walls at a point substantially diametrically opposed to the ports 28 and 29 respectively, these latter ports communicating through short pipes 32 and 33 with the displacement chambers, the pipe 32 leading from the ports 30 and 31 of the controlling member D to the upper portion b of the displacement chamber B, and the pipe 33 leading from the ports 30 and 31 of the controlling member E to the upper portion c of the displacement chamber C. The piston valves 27 are cut away or provided 4with circumferential reduced portions forming passages 27a and 27". 1When the piston valves are at one end of their stroke the passages 27 a are in registration with and establish communication between inlet ports 28 and the ports 30 and working fluid is allowed to pass through that controller member which is so set, to

ing fluid to the chambers therethrough, but t permitting the escape or exhaust of the previously admitted portion of such fluid from the displacement chambers, when it has performed its function in driving out the charge of liquid to be raised, such escape or exhaust being through the ports 31, the passage 27 b and the exhaust ports 29 and to and through the exhaust pipe 34C which is bifurcated at its lower end, the furcation 34a connecting with the exhaust port 29 of the cyl'- inder 26 of the member D andthe furcation 34h to the other exhaust port 29 provided in the cylinder 26 of the member E. It will be understood that, though the controlling members D and E are described as operating in exactly the same manner, they do not operate to admit and exhaust working fluid to the chambers simultaneously, but alternate in their action, for during such time as the piston valve of the member D is admitting air to the displacement chamber B the piston of the member E is positioned so that the passage 27V registers with the port 31 and the exhaust port 29 provided in the cylinder 26 of the memberl B permitting exhaust of the working fluid in the chamber C. The piston valves 27 being subject tocontrol by the timer they are allowed to remain in the positions just described for a predetermined time and then their positions are reversed, that is, the piston valve 27 of the member D will be moved into such position that the portion 27 C of that piston valve will terminate the admission of working fluid to the chamber B by covert Vworking fluid to the displacement chamber Cto expel the liquid therein, the port 31 and the exhaust portf 30 of the member E being closed by the portion 27 d of its piston valve. A supply pipe 35 for the working fluid leads from the distributing timerF Vto the cylinder head 26a of themember D where it connects with the interior of thev cylinder above the portion 27 of the piston valve. branch pipe 35a springing from the pipe 35 leads into the inlet port 28 provided in the cylinder wall of the member E, an extension 35b of the branch pipe leading tothe lower cylinder head 26b of the member E and communicating with vthe interior olI the cylinder below the portion 27d of the respective piston 27. A similar supply pipe 36 for the working fluid leads from the distributing timer F to the cylinder head 26a of the member E and communicates withvthe interior of the respective cylinder 26 above the portion 27c of the pistonvvalve 27. A branchpipe 36a springs from the; pipe 36 and leads into the inlet port 28 of the member D, an extension 36b of such branch pipe leading to the lowercylinder head 2Gb and communicating with the interior of the cylinder 26 of the member D below the portion 27d of the respective piston valve 27.

The distributingtimer- F comprises a distributing cylinder 37 provided with ports and :39, a supply pipe 40 for supplying the elastic medium or working iluidfbeing tapped into the cylinder between the ports 38 and 39, and a piston rod 41 provided at its ends withy pistons 42 and 43 which are cut away as at 42a' and 43a respectively to 'form circumferential grooves or channels.

The chamber' 44- formed by the pistons 42 and 43 and-the walls of the cylinder 37 is always in direct communication with the supply ofv elastic medium as; delivered by the pipe 40, connectionbeing made between the chamber 44 and the channel 42a by a. duct 42b a similar duct 43b being provided in the piston 48 through which the channel 43a communicates with the supply of. elastic medium in the chamber 44. The piston is provided with a connecting rod 45 through which it is reciprocatedby any` suitable device as for instance the eccentric shown at 46. The supply pipe S35-leading to the controllers is connected to the distributing cylinder 37 at thc port 38 thereof, the'supply pipe 36 being connected atY the port 39 of the distributing cylinder 37.

The operation, method of use and ad- .vantages of the pump herein described and shown in the drawing will be readily understood, particularly in and by the following statement A supply ci compressed air or other elastic medium from any suitable source is connected with the chamber 44 of the distributer by the pipe 40, and by reciprocation of the pistons 42 and 43, alternately admitted to the supply pipes 35 and 36, the arrangement of the pistons being such that when the pipe 35 is being-supplied with air through the duet 42h, the channel 42 and the port 3S, the pipe 36 is free to is to be raised discharging its liquid, a charge 'of liquid' 41s entering the otherchamber;'through rtsiin-l alternate admission and exhaust of compressed air to the pipes 35 and 36 actuates the piston valves causingl reversal of their positions with each admission and exhaust into the supply pipes 35 and 36. When compressed airis admitted t0 one ofn the pipes and therethrough to one of' the cylinders 26, at the top portion thereof, the piston in that cylinder is driven down andthe piston valve 27 `thereinisin position to permit exhaust volf the previously admitted charge of compressed air in the respective displacement chamber whichi lit controls,

-w-hile at the same time one of the timer pistons uncovers a'port 38' or. 39 an'di'the other supply 'pipe is in `position to --exha-'ust `through its respective port in the distribut- 1595 the portion 27 C` ofthe piston 27in the'other ingv cylinder, and' the pressure on top4 o cylinder 26 isreleased, airfrom the branch pipe extension leading to the lowerv cylinder head 26b forces the piston valve'up or'in position to' admitcompressed-air toitsreJ spe'ctive displacement chamber through the branchl pipe `supplying lit', to"inlet^port-28,

` passage 27, port'SOand 'the shortzpipe connectin g l'the port 30 with; its respective displacement chamber." When one-ofthe pis-- ton valvesvv is in position to admitcompressed air to'itsdisplacement chamber, "the compressed air so admittedlforcesthe charge of liquidin that*` chamber-out' through its respective discharge'check valve, and: into or through the discharge pipe' 24, which leads to 'the' `desired level 'toivhich the liquid dhile lone chamberis thus take valve and driving out the air therein, its controlling' member pistonvalve -being in position to permit exhaust.

The alternate reciprocation of the piston valves of the controlling members in opposite directions of travel to opposite positions due to the lifting by the compressed air of one of the pistons, while air from the same pipe depresses the other piston per- Jfectly controlling the admission and exhaust of the compressed air into the displacement chambers as regulated by the distributing timer F, so that by the same stroke the distributing timer F permits admission of elastic medium to one displacement chamber and consequently causes eX- pulsion of the liquid therein, it permits the escape through the exhaust pipe 34 of such elasticvmedium Las has just linished its work of expulsion in the other displacement chamber, and the displacement chambers being submerged, liquid automatically enters and fills the chamber1 which will be ready for discharge when the distributing timer F again acts to reverse the position of the piston valves 26 which reversal will take place when the charge of liquid, in the chamber discharging, has been expelled. The interval between reversals or alternate discharges may be accurately adjusted by simply driving the timer at the proper speed to meet the requirements of any particular installation. When the timer is so adjusted the liquid will issue from the discharge end of the pump in a smooth even stream free from pulsations.

Having thus described my invention, I claim and desire to secure by Letters Patent:

l. A pump of the character disclosed, comprising a plurality of displacement chambers adapted for submersion and provided each with a liquid intake valve and a liquid discharge valve, and means for supplying an elastic'medium under pressure to said chambers, said means comprising a supply pipe for each of said chambers, a distributing timer having ports therein controlling the admission and exhaust of the elastic medium to and from said supply pipes, ka controlling lcylinder for each of said chambers, and a controlling valve in each of said controlling cylinders, there being ports in said cylinders through which said elastic medium is passed, subject to control by said controlling valves, said controlling valves being actuated by said elastic medium in its travel en masse to and from said displacement chambers, whereby the actuation of said controlling pistons is governed by said distributing timer.

2. A pump of thecharacter disclosed, comprising a plurality of displacement chambers adapted for submersion and -provided each with a liquid intake valve and a liquid discharge valve and means for supplying an elastic medium under pressure to said chambers, said means comprising a Supply pipe for each of said chambers, a distributing timer controlling admission of elastic medium to said pipes, and independent controlling cylinders, one for each of said displacement chambers; said controlling cylinders being located adjacent said displacement chambers and each provided with elastic medium admission ports and elastic medium discharge ports, and each having a piston therein to control said ports; one,

of said supply pipes being connected with each of said cylinders to cause the actuation of the respective piston valve and being connected with another oi said cylinders at the elastic medium inlet port thereof and connected with such cylinder near one end to admit elastic medium to actuate the piston therein whereby alternate admission of elastic working fluid by said distributing timer to said supply pipes, causes the reciprocation of the piston valves as the working fluid is cut 0E or supplied to the displacement chambers. 'Y

3. In apparatus of the character disclosed, a tubular body provided at one end with a plurality of inlet valves and at the other end with a plurality of discharge valves,

and having a vertical partition ranging f HARRY K. HEDGES.

Witnesses:

ALFRED H. DAEHLER, TYoIE FULLEN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, JD. C.

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